BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 United States 34 55.7%
2 Germany 14 23%
3 Netherlands 5 8.2%
4 China 4 6.6%
5 Republic of Korea 2 3.3%
6 Korea, Republic of 1 1.6%
7 Macedonia, The Former Yugoslav Republic of 1 1.6%